AbstractThe aim of this investigation was the petrological investigation of low-temperature alteration products from the intrusion breccia at Schrammbach, South-Tyrol. Within this breccia, rock fragments of quartzphyllites, quartzites and diorites occur in a fine-grained altered matrix of diorite. After the Permian contact metamorphic event, late-stage Alpine alteration associated with the Villnöss line occurred. This alteration affected the primary mineral assemblage and led to remobilization of LREE. This led to the formation of a LREE-F-bearing carbonate. Using Raman spectroscopy it was possible to identify it as synchysite-( Ce). Synchysite-(Ce) is a rare late-stage alteration product of granites and syenites and forms by fluid-rock interaction with a F-CO2-rich fluid.